Problems on Trains · Question 17 · Easy

An express train covers 432 km in 6 hours. What is its speed in metres per second?

  1. 25 m/s
  2. 72 m/s
  3. 18 m/s
  4. 20 m/s
Answer and explanation

Answer: D. 20 m/s

Explanation: Speed = 432 ÷ 6 = 72 km/h = 72 × 5/18 = 20 m/s.

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